Protractor

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Ingenium, 1995.1303.001
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OBJECT TYPE: SYNTHETIC
DATE: 1960
ARTIFACT NUMBER: 1995.1303.001

MANUFACTURER: C-Thru Ruler Co.
MODEL: 376
LOCATION: Hartford, Connecticut, United States of America

More Information

General Information

Serial #: N/A
Part Number: 1
Total Parts: 2
AKA: N/A
Patents: N/A
General Description: Cellulose nitrate protractor

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: 15.3 cm
Width: 8.5 cm
Height: N/A
Thickness: N/A
Weight: N/A
Diameter: N/A
Volume: N/A

Lexicon

Group: Mathematics
Category: Drawing & measuring instruments
Sub-Category: N/A

Manufacturer

AKA: C Thru
Country: United States of America
State/Province: Connecticut
City: Hartford

Context

Country: Worldwide
State/Province: Unknown
Period: AVAILABLE FOR USE WORLDWIDE
Canada: THESE BELONGED AND WERE USED BY JAMES WATSON WHOSE CAREER INCLUDED EMPLOYMENT BY VARIOUS CANADIAN SHIPYARDS AND THE FEDERAL GOVT.
Function: USED TO MEASURE AND DRAW ANGLES WITH PRECISION
Technical: PART OF THE BASIC KIT OF ANY PROFESSIONAL DRAFTSMAN. THESE HAVE BEEN REPLACED IN DRAFTING BY CAD (COMPUTER AIDED DESIGN) SOFTWARE PROGRAMS WHICH MEANS HAND DRAFTING IS RARELY DONE
Area Notes: Unknown

Details

Markings: .1 PRINTED NEAR BOTTOM: 'C-THRU RULER COMPANY/ Hartford, Conn., U.S.A./ No. 376/ C/ Thru/ TRADE MARK [LOGO]'/ TWO SCALES MARKED AROUND OUTER CURVED EDGE: 0 TO 180 IN 20THS/.2 PRINTED ON BOTTOM: '[?]DE IN ENGLAND'/ TWO SCALES MARKED AROUND OUTER CURVED EDGE: 10 TO 180 IN 20THS
Missing: N/A
Finish: TRANSPARENT WITH BLACK PRINTING
Decoration: N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

C-Thru Ruler Co., Protractor, after 1960, Artifact no. 1995.1303, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/item/1995.1303.001/

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